Emax

Actually an EPROM can be burned many times but must be erased between  
times in a UV Eraser if you wish to re-program the IC with a new  
program.

There are OTP (One-Time-Programmable) EPROMs, but usually have to buy  
those in very large qty as you are doing "production run".

If you were merely changing a few bits (like the SE upgrade might be  
doing), then you would not necessarily have to reprogram the whole  
EEPROM, just change those few bits.

Regards,
Ted


On Nov 28, 2008, at 8:33 AM, Michael Wisbech wrote:

On my Emax1 se, i can boot with the original os also.
so i don't think it's in the eprom - and a eprom has to burned from  
new, as
far i know.

( burn once read many - BORM ?? )
:)

Michael
DK

At 29-11-2008 02:28, you wrote:

 >On the original Emax I gather the EEPROM stores the filter
 >calibrations as well as the code allowing
 >access to the SE functions.






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